Disintegrator rotor for use in conjunction with disintegrating equipment



y 1944- J. A. HALL 2,349,960

DISINTEGRATOR ROTOR FOR USE IN CONJUNCTION WITH DISINTEGRATING' EQUIPMENT Filed June 26, 1942 dames A. f/a

Patented May 30, 1944 UNITED STATES PATENT OFFICE CONJUNCTION EQUIPMENT WITH DISINTEGRAT-IN G James A. Hall, Houston, Tex.

Application June 26, 1942, Serial No. 448,578

4 Claims. (01. 83-411 This invention relates to new and useful improvements in disintegrator rotors for' use in conjunction with disintegrating equipment.

Ithas been the common practice heretofore, to utilize disintegrator rotors in disintegrating equipment, which rotors are formed of an integral casting. The rotor is cast in the form of a pair of fiat rings joined together by pins extending therebetween at spaced intervals around the periphery of the plate. The material to be broken up is fed into the center of the cage so formed, and the cage is rotated at a speed of from five hundred to eight hundred revolutions per minute. The material fed into the center of the cage falls into the rapidly moving pins or bars and is thus broken by impact. In addition the material is thrown into sharp contact with the walls of the housing surrounding the rotor. Thus, the material to be broken up is thrown back and forth within the housing between the rotor I and the side walls of the housing before it drops through the bottom of the housing, and is thoroughly disintegrated,

"As stated hereinbefore, these rotors are customarily cast integrally in one piece, so that as the pins become worn and no longer usable, the entire rotor must be replaced. These rotors are made of an alloy steel which is very hard, and which is difficult toobtain when there are shortages of various metals. In addition, the expense of replacing'an entire rotor is considerable.

It is one object of this invention, therefore, to provide animproved disintegrator rotor which is provided with replaceable wearing surfaces upon the pins which receive the brunt of the wear.

' It is another object of this invention to provide an improved disintegrator rotor wherein scrap railroad rails may be utilized to form the wearingsurfaces of the impact pins.

A still further object of this invention is to provide an improved disintegrator rotor wherein bars of substantially T-shaped or I-shaped cross section may be utilized to form the wearing surface of the impact pin.

Yet anotherobject of the invention is to provide a disintegrator rotor wherein the wearing surface members are easily and quickly removed and replaced.

A construction designed to carry out the invention will be hereinafter described together with other features of the invention.

The invention will be more readily understood from a reading of the following specification and by reference to the accompanying drawing,

wherein an example of the invention is shown,

and wherein: I

"Figure 1 is a vertical sectional view of a disin tegrator housing and showing the disintegrator.

rotor in elevation therein,

"Figure 2 is a side elevation of a disintegrator rotor constructed in accordancewith the invention,

Figure 3 is-a vertical sectional view taken on the line 3-3 of Figure 2,

Figure 4is an enlarged vertical cross sectional view of one of the pin structures as shown in Figure 3,

' Figure 5 is a transverse sectional view taken on the'line 5-5 of Figure 4, and

Figure 6 is a view similar to Fig. 4 showing'a modification of the breaker element structure.

In the drawing, the numeral l0 designates a disintegrator rotor. The rotor II] is formed of a pair of flat ringsll spaced laterally some dis tance from each other, and joined by pins I2 extending at spaced intervals between the plates about the periphery thereof, so as to form a circular cage within which material to be disintegrated is -delivered.- One of the rings II is secured by suitable bolts to a flanged hub l3 which is fkeyed orotherwise mounted upon an axial shaft 1 4 for rotating the rotor.

The disintegrator rotor is adapted to be mounted within a housing l5 which is substantially square in vertical cross section, and which is Ofa width slightly greater than the rotor itself. The housing I5 is provided with relatively heavy plates [6 upon its inner wall, said plates being secured to the frame work of the housing by suitable bolts 11. Material to bedisintegrated isdelivered into the interior of the rotor through one of the side walls of the housing at a point substantially in alinement with the shaft [4. The rotor is revolved at from 500 to 800 R. P. M. by means of the shaft 14, and the material is struck by the pins of the rotor and thrown about or churned about within the housing 15 by the rotor. The impact of striking the pins of the rotor and the side walls of the housing reduces the material ,to be disintegrated, to the desired degree of fineness. After disintegration the material drops out of the housing through the open bottom l8 thereof.

If desired, the side plates l6 of the housing l5 may converge at their lower ends together so as to form the funnel shaped arrangement shown in Figure 1 of the drawing.

In cross section, the pins l2 are in the shape of an elongate rectangle having rounded ends,

The

element 20 may be formedof used or new rail-.

road rails from which the flange has been cut or removed, or they may be formed of rolled or cast metal. The elements 20 are of sufliclent length as to extend between the rings II, and

as shown in Figure 4 are of sufliclent width as to extend half way between the upper end and the lower end of the pin 12. An element 20 is disposed upon each side of the upper edge and each side of the lower end or edge of the pins I2 and are adapted to have their rails portions 2! touching each other so as'to overlie the upper and lower curved ends of the pin I2. The small ends of the upper pair of elements and the lower pair of elements abut one another, and suitable plates 22 are placed upon each side of the elements 20 in horizontal alinement with the pins l2. Suitable bolts 23 pass through the opening 19 of the pin l2, through similar openings 24 formed in theelements 20, and through additional openings 25 formed in the plates 22, the

bolts 23 having their heads 26 and nuts 21 counter-sunk in the plate 22 so as to present a substantially flush surface. The bolts 23 are disposed in staggered rows, as shown in Figure 5,

so as to minimize the weakenings of the pins l2 and the plates 22'by the presence of said holes.

Thus, the exposed portion of each of the pins i2 is surrounded by the elements 20 and plates 22. The pins l2 are in this manner protected against the abrasive action of the material being distintegrated so that the rotor proper remains intact throughout prolonged use. The elements 2!! and the plates 22 receive substantially all of the wear incurred through the use of this rotor. As is clearly shown in Figure 4 of the drawing, the rail portions of the element 20 abut one another and present a substantially com a tinuous upper and lower surface above and beneath the pins l2. The elements 20 are thickest incross sectionat these points, and therefore provide the greatest protection for the pins I2 at this point. In the ordinary use of a disin-' tegrating device such as has been described, the greatest wear upon the impact pins or elements occurs upon the upper and lower sides due to the central feeding of the material to be-disin-v tegrated. Thus, the provision of the greatest protection at these points results in a maximum amount of protection at the greatest points of wearer abrasion. As the elements 20 and the plates 22 become excessively worn, they may be removed by the removal of the bolt 23, and new orreplacement elements and plates may be sub-:

stituted in their stead. In this manner, the rotor may be reconditioned or rebuilt at a minimum of expense, since only the elements 20 and possibly the plates 22 and bolts 23 need be replaced. The balance of the rotor including the rings H and pins l2, remains intact throughout repeated and prolonged operation. As may readily be seen, this latter portion of the device is by far the greater portion thereof. Thus, only a minor portion of the rotor receives abrasion and wear and only a minor portion need be replaced at intervals.

It is pointed out that the elements I9 may be formed of I bars 30 as shown in Fig. 6, that only one element. is required upon each side of each pin. This structure would require less bolts for mounting, and would give a more rigid mount- I relatively flat and not of great thickness, they may be formed in any desirable shape or dimension without departing from the spirit of this invention. 7

The foregoing descriptionof the invention is explanatory thereof and various changes in the size, shape and materials, as well as in the de-. tails of the illustrated construction may be made, within the scope of the appended claims, without departing from the spirit of the invention.

What I claim and desire to secure by Letters Patent is:

1. In a distintegrator rotor of the type having side plates joined by transverse bars, the improvement which includes, impact elements having a T-shaped cross-section disposed in pairs above and below each bar, the depending flanges or the elements extending along the sides of the bars, and means for securing the elements to the bars. 7

2. In a disintegrator rotor of the type having side plates joined by transverse bars, the improvement which includes, impact elements having an I-shaped cross-section disposed in pairs above and below each bar, the intermediate flanges of the elements extending along the sides of the bars, and means for securing the elements to the bars. I

3. A rotor for disintegrators including, a cage formed of side members joined .by transverse members, impact elements mounted on the transverse members to form wearing surfaces, said elements being T-shaped in cross-section and being disposed in surrounding relationship to said transverse members so as to overlie and enclose the same, and means for securing said elements to the transverse members.

,4. A rotor for a disintegrator including, acage formed of side members joined by transverse members, impact elements mounted on the transverse members to provide wearing surfaces, each element having a central web and a pair of lateral flanges at each end and overlying one side of each transverse member whereby the elements enclose said transverse members. and means for securing said elements to the transverse members.

JAMES A. HALL. 

